Effect of production conditions on mechanical properties of bauxite refractory materials

Katsavou, ID; Krokida, MK; Ziomas, IC

dc.contributor.author	Katsavou, ID	en
dc.contributor.author	Krokida, MK	en
dc.contributor.author	Ziomas, IC	en
dc.date.accessioned	2014-03-01T01:30:16Z
dc.date.available	2014-03-01T01:30:16Z
dc.date.issued	2009	en
dc.identifier.issn	0862-5468	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19526
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-73949091532&partnerID=40&md5=5b127a04222c484b75f78eacefd8614e	en
dc.subject	Compression	en
dc.subject	Mathematical models	en
dc.subject	Molding pressure	en
dc.subject	Resin	en
dc.subject.classification	Materials Science, Ceramics	en
dc.subject.other	Bonding strength	en
dc.subject.other	Compression tests	en
dc.subject.other	Critical value	en
dc.subject.other	Elasticity parameters	en
dc.subject.other	Grain size	en
dc.subject.other	High temperature furnaces	en
dc.subject.other	Life-times	en
dc.subject.other	Maximum stress	en
dc.subject.other	Mechanical resistance	en
dc.subject.other	Molding pressure	en
dc.subject.other	Phenol-formaldehyde resin	en
dc.subject.other	Physical meanings	en
dc.subject.other	Production condition	en
dc.subject.other	Resin content	en
dc.subject.other	Stress-strain data	en
dc.subject.other	Visco-elastic parameters	en
dc.subject.other	Compression molding	en
dc.subject.other	Compression testing	en
dc.subject.other	Compressive strength	en
dc.subject.other	Computer simulation	en
dc.subject.other	Data compression	en
dc.subject.other	Elasticity	en
dc.subject.other	Furnace linings	en
dc.subject.other	Grain size and shape	en
dc.subject.other	Granulation	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Phenolic resins	en
dc.subject.other	Phenols	en
dc.subject.other	Refractory materials	en
dc.subject.other	Resins	en
dc.subject.other	Sintering	en
dc.subject.other	Mathematical models	en
dc.title	Effect of production conditions on mechanical properties of bauxite refractory materials	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Compressive strength of bauxite refractories with phenol-formaldehyde resin as binder used as lining in high temperature furnaces, was investigated in this study. Mechanical properties are used to determine the material mechanical resistance and thus they represent the life time of the refractory. Different bauxite grain size, resin content and molding pressure were selected for the preparation of the specimens. The stress - strain data of compression test were modeled using parameters with physical meaning such as maximum stress (sigma(max)), maximum strain (e(max)), elasticity parameter (E), and viscoelastic parameter (p). In addition, simple mathematical models were developed to correlate the maximum stress and corresponding strain to producing conditions and raw materials' characteristics. After data processing it was noticed that when increasing molding pressure maximum stress and maximum strain increased, while the viscoelastic parameter decreased As far as elasticity parameter is concerned, at first it decreases with grain size and beyond a critical value of molding pressure, between 100 and 200MPa, it increases. Higher resin content led to higher compressive strength, due to higher cohesion and bonding strength. On the other hand, increased bauxite grain size leads to samples with degraded mechanical properties as larger granules hinder sintering between the granule boundaries.	en
heal.publisher	INST CHEMICAL TECHNOLOGY, DEPT GLASS CERAMICS	en
heal.journalName	Ceramics - Silikaty	en
dc.identifier.isi	ISI:000273176700010	en
dc.identifier.volume	53	en
dc.identifier.issue	4	en
dc.identifier.spage	287	en
dc.identifier.epage	296	en